diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2007-10-20 21:08:32 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2007-10-20 21:08:32 +0000 |
| commit | cd6135a2ca1bb702976a123597adee2f80d08440 (patch) | |
| tree | 85c48622fb99e85e86e8e81fefa6a9b8b3dbc97c | |
| parent | ab47019dccc988f3261fc8c7ebadb05d71011b8d (diff) | |
Ack IRQ *after* fetching IPI args. From NetBSD.
| -rw-r--r-- | sys/arch/sparc64/sparc64/locore.s | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/sys/arch/sparc64/sparc64/locore.s b/sys/arch/sparc64/sparc64/locore.s index ac677c22686..0aba00db92b 100644 --- a/sys/arch/sparc64/sparc64/locore.s +++ b/sys/arch/sparc64/sparc64/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.93 2007/10/20 16:54:52 miod Exp $ */ +/* $OpenBSD: locore.s,v 1.94 2007/10/20 21:08:31 kettenis Exp $ */ /* $NetBSD: locore.s,v 1.137 2001/08/13 06:10:10 jdolecek Exp $ */ /* @@ -3176,8 +3176,6 @@ interrupt_vector: mov IRDR_0H, %g2 ldxa [%g2] ASI_IRDR, %g2 ! Get interrupt number membar #Sync - stxa %g0, [%g0] ASI_IRSR ! Ack IRQ - membar #Sync ! Should not be needed due to retry btst IRSR_BUSY, %g1 bz,pn %icc, 3f ! Spurious interrupt @@ -3186,10 +3184,15 @@ interrupt_vector: blu,pt %xcc, Lsoftint_regular sllx %g2, 3, %g5 ! Calculate entry number mov IRDR_1H, %g3 - ldxa [%g3] ASI_IRDR, %g3 ! Get IPI handler arg0 + ldxa [%g3] ASI_IRDR, %g3 ! Get IPI handler arg0 mov IRDR_2H, %g5 + ldxa [%g5] ASI_IRDR, %g5 ! Get IPI handler arg1 + + stxa %g0, [%g0] ASI_IRSR ! Ack IRQ + membar #Sync ! Should not be needed due to retry + jmpl %g2, %g0 - ldxa [%g5] ASI_IRDR, %g5 ! Get IPI handler arg1 + nop Debugger() NOTREACHED #else @@ -3198,6 +3201,9 @@ interrupt_vector: #endif Lsoftint_regular: + stxa %g0, [%g0] ASI_IRSR ! Ack IRQ + membar #Sync ! Should not be needed due to retry + sethi %hi(_C_LABEL(intrlev)), %g3 or %g3, %lo(_C_LABEL(intrlev)), %g3 ldx [%g3 + %g5], %g5 ! We have a pointer to the handler |